How rare is a 1970 Grand coupe

Hi everyone

Season greeting from the great white north, well not yet.

I know this thread is for an e body, but there seems to be such a wealth on knowledge on this forum that I just had to post this.

I have a 1970 Grand coupe cuda with a 383 hp, 4 speed, B5 paint, black interoir and AC with rear defrost. Front disks rear drums

The car currently taken apart but it was a race car. Rear frame clip, roll cage and full tubes . Because of this all the fender fender tags are long gone plus the build sheets. I do however have the original engine, transmission and rear end.

My question is is this car rare enough to get the specks from Galon and restore back to original or just turn it into a modern hemi touring car.

I do have a older shell that I can transplant the frame and roll cage into and build the touring car. I want to make this and old shell with all modern running gear.

Any help here would be great.

Rick